Azure App Service is a platform-as-a-service (PaaS) offering that allows users to deploy applications without worrying about infrastructure management. It uses a "serverless" approach, which eliminates the need for provisioning or managing servers. However, understanding the relationships between App Service resources can impact performance and costs. Datadog has released support for Azure App Service in its Serverless view, allowing users to visualize all their Azure App Service resources, understand relationships between apps and App Service plans, quickly spot issues, identify underutilized and overloaded App Service plans, and gain insight into APM usage.